Alizarine and PY128

This is a trial of 2001. The first two samples show that Alizarine has decidedly faded in sunlight.

I draw your attention to the third sample, which is a test of the medium. This is something very important: you always have to test the medium used for your trial, because it can change with the exposure too. Here you see that the upper half of the sample, which was hold in the dark, has yellowed a little.

Now look at the last three samples, PY128. The one on the right (the last one) seems to have faded in the sun. But in reality this is not the case, what is demonstrated by the one on the left with an acrylic medium, which hasn’t faded at all. The apparent fading of the last sample is due to the action of the sun on the medium (the same alkyd medium as in the third sample).

Copyright © 2001 Sea Ooh See All Rights Reserved